CVE-2026-8889

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-03. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 7.5Exploit: None knownExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

Version 3.0.7 of the Securly Chrome Extension uses deprecated SHA-1 hashing for IWF CSAM URL matching (25,020 hashes) and CIPA blocklist matching (12,352 hashes).

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
38
EG Risk 38/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
EPSS PROB
0.3%
EPSS %ILE
22nd
KEV
Not listed

Published

June 3, 2026

Last Modified

July 22, 2026

Advisory Details (1)

Auto-updated Jun 10, 2026
No fix on record yet. Sources: cert.
cert

VU#595768 - Securly Chrome Extension contains multiple weak encryption and access control vulnerabilities

https://kb.cert.org/vuls/id/595768

Vendor Advisories for CVE-2026-8889(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 28× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 244 total refreshes for this CVE.

  1. 2026-10-09 20:08 UTCEPSS rescore
  2. 2026-10-08 17:13 UTCEPSS rescore
  3. 2026-10-07 23:48 UTCEPSS rescore
  4. 2026-10-06 15:18 UTCEPSS rescore
  5. 2026-10-05 17:44 UTCEPSS rescore
  6. 2026-10-04 23:22 UTCEPSS rescore
  7. 2026-10-01 19:51 UTCEPSS rescore
  8. 2026-09-30 15:04 UTCEPSS rescore
  9. 2026-09-28 13:52 UTCEPSS rescore
  10. 2026-09-28 13:52 UTCEPSS rescore
  11. 2026-09-27 13:49 UTCEPSS rescore
  12. 2026-09-26 15:59 UTCEPSS rescore
  13. 2026-09-24 14:04 UTCEPSS rescore
  14. 2026-09-23 17:54 UTCEPSS rescore
  15. 2026-09-22 16:01 UTCEPSS rescore
  16. 2026-09-21 21:09 UTCEPSS rescore
  17. 2026-09-20 20:16 UTCEPSS rescore
  18. 2026-09-18 19:28 UTCEPSS rescore
  19. 2026-09-17 19:32 UTCEPSS rescore
  20. 2026-09-16 14:09 UTCEPSS rescore
  21. 2026-09-16 05:15 UTCEPSS rescore
  22. 2026-09-15 03:12 UTCEPSS rescore
  23. 2026-09-14 05:30 UTCEG score recompute
  24. 2026-09-14 05:30 UTCGHSA enrichment
  25. 2026-09-13 16:48 UTCEPSS rescore
Show 75 more
  1. 2026-09-12 15:02 UTCEPSS rescore
  2. 2026-09-11 14:53 UTCEPSS rescore
  3. 2026-09-11 09:38 UTCEPSS rescore
  4. 2026-09-08 22:01 UTCEPSS rescore
  5. 2026-09-06 13:48 UTCEPSS rescore
  6. 2026-09-05 15:31 UTCEPSS rescore
  7. 2026-09-04 05:07 UTCEPSS rescore
  8. 2026-09-02 14:12 UTCEPSS rescore
  9. 2026-09-01 13:54 UTCEPSS rescore
  10. 2026-09-01 04:40 UTCEPSS rescore
  11. 2026-08-30 19:18 UTCEPSS rescore
  12. 2026-08-30 01:22 UTCEPSS rescore
  13. 2026-08-28 21:42 UTCEPSS rescore
  14. 2026-08-27 14:25 UTCEPSS rescore
  15. 2026-08-26 14:47 UTCEPSS rescore
  16. 2026-08-25 13:49 UTCEPSS rescore
  17. 2026-08-25 03:36 UTCEG score recompute
  18. 2026-08-25 03:36 UTCGHSA enrichment
  19. 2026-08-24 14:18 UTCEPSS rescore
  20. 2026-08-23 12:46 UTCEG score recompute
  21. 2026-08-23 12:46 UTCGHSA enrichment
  22. 2026-08-23 00:19 UTCEPSS rescore
  23. 2026-08-21 23:49 UTCEPSS rescore
  24. 2026-08-21 14:40 UTCGHSA enrichment
  25. 2026-08-20 23:07 UTCEG score recompute
  26. 2026-08-20 23:07 UTCGHSA enrichment
  27. 2026-08-20 22:56 UTCEPSS rescore
  28. 2026-08-20 10:00 UTCEG score recompute
  29. 2026-08-20 10:00 UTCGHSA enrichment
  30. 2026-08-19 17:04 UTCEPSS rescore
  31. 2026-08-18 13:49 UTCEPSS rescore
  32. 2026-08-18 13:49 UTCEPSS rescore
  33. 2026-08-17 13:47 UTCEPSS rescore
  34. 2026-08-17 06:43 UTCGHSA enrichment
  35. 2026-08-16 16:26 UTCEG score recompute
  36. 2026-08-16 16:26 UTCGHSA enrichment
  37. 2026-08-16 14:56 UTCEPSS rescore
  38. 2026-08-16 14:56 UTCEPSS rescore
  39. 2026-08-16 03:34 UTCEG score recompute
  40. 2026-08-16 03:34 UTCGHSA enrichment
  41. 2026-08-16 02:15 UTCEPSS rescore
  42. 2026-08-15 14:42 UTCEG score recompute
  43. 2026-08-15 14:42 UTCGHSA enrichment
  44. 2026-08-15 01:31 UTCEPSS rescore
  45. 2026-08-15 00:38 UTCGHSA enrichment
  46. 2026-08-14 11:46 UTCGHSA enrichment
  47. 2026-08-13 22:54 UTCEG score recompute
  48. 2026-08-13 22:54 UTCGHSA enrichment
  49. 2026-08-13 22:00 UTCEPSS rescore
  50. 2026-08-13 02:37 UTCEG score recompute
  51. 2026-08-13 02:37 UTCGHSA enrichment
  52. 2026-08-12 13:51 UTCEPSS rescore
  53. 2026-08-12 13:45 UTCGHSA enrichment
  54. 2026-08-12 00:26 UTCEG score recompute
  55. 2026-08-12 00:26 UTCGHSA enrichment
  56. 2026-08-11 13:43 UTCEPSS rescore
  57. 2026-08-11 11:29 UTCEG score recompute
  58. 2026-08-11 11:29 UTCGHSA enrichment
  59. 2026-08-11 00:00 UTCEPSS rescore
  60. 2026-08-10 22:37 UTCGHSA enrichment
  61. 2026-08-10 04:58 UTCGHSA enrichment
  62. 2026-08-09 16:07 UTCEG score recompute
  63. 2026-08-09 16:07 UTCGHSA enrichment
  64. 2026-08-09 13:47 UTCEPSS rescore
  65. 2026-08-09 03:15 UTCEG score recompute
  66. 2026-08-09 03:15 UTCGHSA enrichment
  67. 2026-08-08 16:37 UTCEPSS rescore
  68. 2026-08-08 14:23 UTCGHSA enrichment
  69. 2026-08-08 01:29 UTCEG score recompute
  70. 2026-08-08 01:29 UTCGHSA enrichment
  71. 2026-08-07 16:30 UTCEPSS rescore
  72. 2026-08-07 12:37 UTCGHSA enrichment
  73. 2026-08-06 23:46 UTCEG score recompute
  74. 2026-08-06 23:46 UTCGHSA enrichment
  75. 2026-08-06 13:47 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8889?
CVE-2026-8889 is a high vulnerability published on June 3, 2026. Version 3.0.7 of the Securly Chrome Extension uses deprecated SHA-1 hashing for IWF CSAM URL matching (25,020 hashes) and CIPA blocklist matching (12,352 hashes).
When was CVE-2026-8889 disclosed?
CVE-2026-8889 was first published on June 3, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8889 actively exploited?
CVE-2026-8889 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (22nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-8889?
CVE-2026-8889 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-8889?
No fix for CVE-2026-8889 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-8889 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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